22724160 has 56 divisors (see below), whose sum is σ = 72152256. Its totient is φ = 6059520.

The previous prime is 22724129. The next prime is 22724173. The reversal of 22724160 is 6142722.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22724160.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10876 + ... + 12795.

Almost surely, 2^22724160 is an apocalyptic number.

22724160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22724160 is an abundant number, since it is smaller than the sum of its proper divisors (49428096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22724160 is a wasteful number, since it uses less digits than its factorization.

22724160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23691 (or 23681 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 22724160 is about 4766.9864694585. The cubic root of 22724160 is about 283.2452352014.

Adding to 22724160 its reverse (6142722), we get a palindrome (28866882).

The spelling of 22724160 in words is "twenty-two million, seven hundred twenty-four thousand, one hundred sixty".